The top layer, of the XVENT shorts, is made from a woven mesh material that ensures excellent ventilation for enhanced breathability. Meanwhile, the interior layer is made from PWX compression which delivers muscle support & an incredible power output. The shorts are kept in position with an elasticated waistband that boosts comfort & allows for a great level of flexibility. Care Instructions Machine wash in cold water with similar colours Do not tumble dry Hang to dry in a cool shady area away from sun Do not use bleach, fabric softeners or dryer sheets Do not iron